These are custom brick-built minifigures of some of the main characters from the early Marvel Star Wars comics. They banded together to defeat the swoop gang led by Sergi X Arrigantus on the anarchic planet Aduba-3 shortly after the Battle of Yavin. There were eight in all, including Han Solo. These are my favorite four.
From left to right:
-Chewbacca the Wookiee
-Jaxxon the Lepi
-Hedji the Spiner
-Don-Wan Kihotay, the delusional Jedi-errant who wielded his yellow lightsaber while speaking in archaic Galactic Basic (just like ye Jedi in ye Olde Republic, right?)
The anthropomorphic green rabbit, Jaxxon ("Jax" for short (which he ain't)), is unquestionably the third best Star Wars character in history*.
* The best is Mount Sorrow and the second best is Splendid Ap.
Enjoy, and be on the lookout for further brick-built figures and more!